Evolution exam

Thousands of years ago draft with store next were common with in giraffe populations.nearly all giraffes populations today have longnecks. This difference could be due to

Mutation in genetic material controlling next size occurring in the reproductive cells of a giraffe

Which two processes result in variations that commonly influenced the evolution of sexually reproducing species

Mutation in genetic recombination

Diagram below represents for different species of wild birds each species has been with different structural adaptions. The development of these adaptions can best be explained by the concept of

Natural selection

Which two organisms would be expected to have the most similar genetic material

Organism a an organism see because they are both you and I saw your absent under nuclear membrane and present under DNA

Which the following statements is most closely related to the modern theory of evolution

Organisms best adapted to a change in environment are more likely to reproduce and Past their genes to offspring

Environment that undergoes frequent change species that reproduce sexually may have an in vantage over species that reproduce a sexually because the sexually reproducing species produce

Produce offspring with more variety

In a group of mushrooms exposed to a poisonous chemicals only a few of the mushroom survived. The best explanation for the resistance of the surviving mushrooms is that the resistance

Resulted from a presence of mutations in the mushrooms

The theory of biological evolution includes the concept that

Species of organisms found on earth today have adaptions not always found in early species

Diagram below shows the effective of spraying a pesticide on a population of insects over three generations. What concept is represented in the diagram

Survival of the fittest

Scientist compare boss or means of a species that was 5000 years ago with members of the same species living today. Scientist conclude that this species had changed very little over the entire time period.which statement best accounts for this lack of change

The environment did not change significantly and those offspring expressing new characteristics did not survive

Provide a biological explanation for this loss of effectiveness of insecticide in your answer be sure to include.

The insects adapted to the insecticides. They adapted by the strongest to survive breed to making more flies more resistant. You make them not reproduce by a chemical

Which discovery would support the explanation of cichild diverse city discussed in the reading passage

The logical conditions in each of the small lakes were very different

The similarities of the bones labeled a in the diagram below provide evidence that

The organisms may have evolved from a common ancestor

According to the information given as the water level of the lakes change many species of cichild survived while others became extinct. Stay why some species survive while others became extinct

The others that went extinct may have not been fitted for that environment they didn't adapt very well with the changing environments

The teeth of carnivores are pointed in our good for puncturing and ripping flush the teeth of herbivores are flat and are good for grinding and chewing. Which of the following statements best explains these observations

The two types of teeth most likely involved as a result of natural selection

A new chemical was discovered and introduced into a culture containing one species of bacteria. Within a day most of the bacteria were dead but if you remained alive. Which statement best explains why

They had a genetic variation that gave them resistant to the chemical

According to the reading passage each cichild population is generally different from the other cichild populations. State one reason for these genetic differences

When the lake split the environment change making the fish having to adapt to it. Adaptions

Which factor could be the cause of the other three in an animal species

A lack of genetic variability in the species

Which factor is least likely to contribute to an increase in the rate of evolution

A long period of eenvironment stability

Natural selection and it's evolutionary consequences provide a scientific explanation for each of the following except

A stable physical environment

Which process is least likely to add to a variety of trades in a population

Accurate replication of DNA

Which of the following statements describes a sexual reproduction

Adaptive traits are usually passed from parent to offspring without genetic modification

In the given diagram is a represents A simple multicellular heterotrophic organisms B would most likely represent

Another type of simple multicellular heterotroph

Which characteristic of a population would most likely indicate the lowest potential for evolutionary change in that population

Asexual reproduction and few mutations

If variation causes the production of an improved variety of apples. What is the best method to use to obtain additional apple trees of this variety and shortest period of time

Asexual reproduction or

Evolutionary path ways of seven living species are shown in the diagram below. Which two species are likely to have the most similar DNA base sequences

C and D

Mutations that occur in skin or long cells have little effect on the evolution of a species because mutations in the cells

Cannot be passed on to offspring

Which factors contributed most to the extinction of many species

Changes in the environment

When a particular white lost lands on white birch trees it's collar has a high adaptive value. If the birch trees become covered with black so the white color of the particular lost in the environment would most likely

Decrease in adaptive value

The diagram below shows some evolutionary path ways each letter represents a different species.which two species are the most closely related

E and I

A certain species has little genetic variation the rapid extinction of this species would most likely result from the effect of

Environmental change

A certain proposal in the field of classification divides life into three broad categories called domains. This idea is illustrated below. Which concept is best supported by this diagram

Evolutionary pathways can proceed in several directions with only some pathways leading to present day organisms

A certain plant species found only in one particular stream value in the world has a very shallow roots system. Eight earthquake causes the stream to change its course so that the valley in which the plant species lives becomes very dry. As a result the species dies out completely. The effect of this change on this plant species is known as

Extinction

The diagram below shows some evolutionary path ways each letter represents a different species. In the diagram shown which two organisms are most closely related? In the diagram showing the most recent ancestor of organisms D and F is?

F and j B

According to the diagram below which three species live on earth during the same time period

Habilis, robustus, boisei

Woolly mammoth became extinct thousands of years ago while other species of mammals that existed at that time still exist today. These other species of mammals most likely exist today because unlike the mammoths they

Had certain inheritable traits that enabled them to survive

A basketball player develops speed and power as it was all of practice. This athletic ability will not be passed on to her offspring because

Hey sequences in the DNA are not affected by this activity

The presence of some similar structures and all vertebrates suggest that these vertebrates

May have an evolutionary relationships

Which statement describing a cause of extinction includes the other three

Members of the extinct species left adaptions essential for survival